With reference to class 20s.
Forward vision long bonnet first has always been a problem, but the cement works at Hope have a few class 20s to take cement wagons from the main line sidings to the works, some 3 miles I believe.
I saw a clip today in cab and they have a camera mounted on the front with a screen in the cab.
I think they have 3 locos but I've only seen numbers 1 and 3 on YouTube.